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editline - NetBSD
The editline library used by Jconsole in Unix for line recall is covered (partly) by the following NetBSD copyright:
Copyright (c) 1997 The NetBSD Foundation, Inc. All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Jaromir Dolecek.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software must display the following acknowledgement:
This product includes software developed by the NetBSD Foundation, Inc. and its contributors.
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Zlatan is one of the best FIFA players in the world
Accomplishments and reasons why he is great
Zlatan went to Malamo at ayoung age where other big clubs got intrest in him
Multiple times voted best soccer player of the year for many legues
Paris Saint Germain 's all-time top-scorer:156
He has played for great clubs like Malamo,Ajax,Juventus,Inter Milan, Barcalona, Milan Paris Saint Germain and Manchester United
Has won 13 league tiltes in 15 seasonZs
He had led Sweden to many wins and he is the capitain
and he can break anckles
Zlatan Ibrahimovic is also known for scoring one of the best goals while playing for sweden
against england in a world cup qualifier
The Reason I chose Zlatan Ibrahimovic as my athlete is becuase I like the team he's on and i'm facinated by how well he plays and how many goals he scores amd how many assit he can make and still be a top scorer plus he is very tall and that doesn't stop him of being the best in the world. Zlatan Ibrahimovic is one of the best soccer players that there will ever be when he retires he will be a legend. He will also be one of Swedens's best players ever.


The principal class in this package is {@see AuxiliaryDataImporter}.
It contains a main
method which will read the Dump.txt file
supplied by Bill Piel and try to create the studies described therein.
Other classes in this package include the various "Repatriate*" classes, which find orphaned data in the database and link it back to the objects to which it belongs, {@see DestroySubmission}, which completely destroys the submission specified on the command line, and {@see AnnotateTree}, which adds left-right labels to the nodes in a specified tree object.
Many of these classes are based on {@see Standalone}, which contains utility methods that set up a Hibernate environment, retrieve required Spring beans, and initiate database transactions.


| Version | Date | Description |
|---|---|---|
| 1.0 | 2014-07-01 | v1.0 |
| 0.9 | 2014-05-16 | v0.9 |
| 0.8.1 | 2013-03-12 | v0.8.1 |
| 0.8 | 2013-03-08 | v0.8 |
| 0.7.2 | 2013-02-06 | v0.7.2 |
| 0.7.1 | 2013-01-30 | v0.7.1 |
| 0.7 | 2013-01-18 | v0.7 |
| Type | Changes | By |
|---|---|---|
| Fix Chronology text missing from jar. | jodastephen | |
| Try to be more OSGi friemdly. Fixes #4. | jodastephen | |
| Backport to JDK 6. Fixes #11. | jodastephen | |
| Add DateTimeUtils to simulate methods added to JDK classes. Fixes #5. | jodastephen | |
| Fix Instant parsing. Fixes #10. | jodastephen | |
| Ensure OSGi information is in pom. Fixes #9. | jodastephen |
| Type | Changes | By |
|---|---|---|
| Update to match JDK 8u20. | jodastephen | |
| Move to Eclipse m2e and update pom. | jodastephen |
| Type | Changes | By |
|---|---|---|
| Use better class loader for TZDB file | jodastephen | |
| Fix bug in calculation of quarter between | jodastephen |
| Type | Changes | By |
|---|---|---|
| Create backport of ThreeTen/JSR-310 match JDK 8 milestone 6 | jodastephen |


Introduction to Explainable AI - 6th of Nov, 2019
Join us for an evening of Explainable AI!
From talking to people across different businesses for the last few months, we know that there is significant interest in “exaplainble” AI models. The reason is natural: When we deploy these decision-making tools, we need to understand why they make decisions; as this helps us learn if they are doing the “right” thing. And furthermore, it let’s us improve or adjust our processes.
Our intention is to give you a high-level overview, and cover one or two areas in some detail, so you can get a feel for what’s involved.
As such, we’ve organised an event to explore the landscape of Explainable AI. In particular, we will:
- Look at what’s available,
- Work out what is involved in applying it,
- and, Learn where the field is heading!
We’re bringing together a few people in Melbourne who are doing interesting work in this area!
After attending this event, you should be able to understand:
- What is Explainable AI (XAI)?
- Who is using it?
- How well does it work?
- What are the alternatives?
- How can I get started?
So if you’ve got an interest in using and building that AI is understandable, please join us!
The event is by donation only, and you can grab tickets over on Humanitix - Introduction to Explainable AI - Opening the black box!. All donations go to support education for girls.
We’ll be running out of the awesome space at OC House in North Melbourne. There will be drinks, snacks, and plenty of time for mingling!


DS Boosters Project leader, visual design and wp development Medical Center Interactive wireframing and visual design Dic Donohue WP child theme design and development DailyUI Challenge Interface design challenges BRCSM Visual design and wp development Bob Webb Visual design and wp development


More info soon - to be done.
The "syntax" for IPCs is described in IPC Standard
You may have noticed that it is fairly unusable because of the extermly large object for sending a single objects/string/... of data.
This is a way to get around this problem:
1. Define a general use object like this:
var obj = {header : {name : [name of the target process], channel : [the target channel]},data : {type : [message type], target : [mostly commonly ignored, only used for filtering. Set to "main" as default.], data : [leave empty], author : {name : [name of the sending process], channel : [channel of the sending process]}}};
(The "[]" brackets do not represent arrays...)
2. When you want to send an ipc now, you can just use the predefined object like this:
let ipc = obj; //copies the object
ipc.data.data = [data to send] //changes data of copied object
process.send(ipc);


Concurence lists module without supervisor. This module run faster than with supervisor module but less reliable. Every function in this module will returns atom timeout if Timeout occurs. NOTE: You only should only use this module when have to do a not-too-long list of very complex functions.
Concurence lists module without supervisor. This module run faster than with supervisor module but less reliable. Every function in this module will returns atom timeout if Timeout occurs. NOTE: You only should only use this module when have to do a not-too-long list of very complex functions.
| all/2 | Equivalent to con_lists:all(Fun, List, 10000). |
| all/3 |
|
| any/2 | Equivalent to con_lists:any(Fun, List, 10000). |
| any/3 |
|
| dropmap/2 | Equivalent to con_lists:dropmap(Fun, List, 10000). |
| dropmap/3 |
|
| filter/2 | Equivalent to con_lists:filter(Fun, List, 10000). |
| filter/3 |
|
| filtermap/2 | Equivalent to con_lists:filtermap(Fun, List, 10000). |
| filtermap/3 |
|
| flatmap/2 | Equivalent to con_lists:flatmap(Fun, List, 10000). |
| flatmap/3 |
|
| foreach/2 | Equivalent to con_lists:foreach(Fun, List, 10000). |
| foreach/3 |
|
| keymap/3 | Equivalent to con_lists:keymap(Fun, List, 10000). |
| keymap/4 |
|
| map/2 | Equivalent to con_lists:map(Fun, List, 10000). |
| map/3 |
|
| partition/2 | Equivalent to con_lists:partition(Fun, List, 10000). |
| partition/3 |
|
all(Fun, List) -> boolean() | timeout
Equivalent to con_lists:all(Fun, List, 10000).
all(Fun, List, Timeout) -> boolean() | timeout
Type
Fun = fun((Ele::Term) -> boolean()) List = [Term] Term = term() Timeout = integer() | infinityDescription
Returns true if Fun(Ele) returns true for all elements Ele in List, returns false if Fun(Ele) returns false for at least one element Ele in List.Example
con_lists:all(fun(X) -> X rem 2 == 0 end, [1, 2, 3, 4, 5], 10000).
any(Fun, List) -> boolean() | timeout
Equivalent to con_lists:any(Fun, List, 10000).
any(Fun, List, Timeout) -> boolean() | timeout
Type
Fun = fun((Ele::Term) -> boolean()) List = [Term] Term = term() Timeout = integer() | infinityDescription
Returns true if Fun(Ele) returns true for at least one element Ele in List, returns false if Fun(Ele) returns false for all elements Ele in List.Example
con_lists:any(fun(X) -> X rem 2 == 0 end, [1, 2, 3, 4, 5], 10000).
dropmap(Fun, List) -> List1 | timeout
Equivalent to con_lists:dropmap(Fun, List, 10000).
dropmap(Fun, List, Timeout) -> List1 | timeout
Type
Fun = fun((Ele::Term) -> boolean() | {false, Value}) List = [Ele] List1 = [Ele | Value] Ele = Value = term() Timeout = integer() | infinityDescription
Calls Fun(Ele) on succssive elements Ele of List1. Fun/1 must return either a boolean or a tuple {false, Value}. The function returns the list of elements for which Fun returns a new value, where a value of false is synonymous with {false, Ele}. This function basically oposite of filtermap/2 and filtermap/3.Example
con_lists:dropmap(fun(X) -> case X rem 2 of 0 -> true; _ -> {false, X*3} end end, [1, 2, 3, 4, 5], 10000).
filter(Fun, List) -> List1 | timeout
Equivalent to con_lists:filter(Fun, List, 10000).
filter(Fun, List, Timeout) -> List1 | timeout
Type
Fun = fun((Ele :: Term) -> boolean()) List = List1 = [Term] Term = term() Timeout = integer() | infinityDescription
Returns List1 is a list of all elements Elem in List for which Fun(Ele) returns true.Example
con_lists:filter(fun(X) -> X rem 2 == 0 end, [1, 2, 3, 4, 5], 10000).
filtermap(Fun, List) -> List1 | timeout
Equivalent to con_lists:filtermap(Fun, List, 10000).
filtermap(Fun, List, Timeout) -> List1 | timeout
Type
Fun = fun((Ele) -> boolean() | {true, Value}) List = [Ele] List1 = [Ele | Value] Ele = Value = term() Timeout = integer() | infinityDescription
Calls Fun(Ele) on succssive elements Ele of List1. Fun/1 must return either a boolean or a tuple {true, Value}. The function returns the list of elements for which Fun returns a new value, where a value of true is synonymous with {true, Ele}.Example
con_lists:filtermap(fun(X) -> case X rem 2 of 0 -> {true, X div 2}; _ -> false end end, [1, 2, 3, 4, 5], 10000).
flatmap(Fun, List) -> List1 | timeout
Equivalent to con_lists:flatmap(Fun, List, 10000).
flatmap(Fun, List, Timeout) -> List1 | timeout
Type
Fun = fun((A) -> B) List = [A] List1 = [B] A = B = term() Timeout = integer() | infinityDescription
Takes a function from As to Bs, and a list of As and produces a list of Bs by applying the function to every element in the list. This function is used to obtain the return values. The evaluation order depends on the implementation.Example
con_lists:flatmap(fun(X) -> [X, [X]] end, [n, e, i, h], 10000).
foreach(Fun, List) -> ok | timeout
Equivalent to con_lists:foreach(Fun, List, 10000).
foreach(Fun, List, Timeout) -> ok | timeout
Type
Fun = fun((Ele :: T) -> term()) List = [T] T = term() Timeout = integer() | infinityDescription
Calls Fun(Ele) for each element Ele in List. This function is used for its side effects and the evaluation order may not be the same as the order of the elements in the list.Example
con_lists:foreach(fun(X) -> io:format("~p ", [X]) end, [165, 137, 140, 215], 10000).
keymap(Fun, N, List::TupleList) -> TupleList1 | timeout
Equivalent to con_lists:keymap(Fun, List, 10000).
keymap(Fun, N, List::TupleList, Timeout) -> TupleList1 | timeout
Type
Fun = fun((Term :: term()) -> Term1 :: term()) N = interger() >= 1 1..tuple_size(Tuple) TupleList = TupleList1 = [Tuple] Tuple = tuple() Timeout = integer() | infinityDescription
Returns a list of tuples where, for each tuple in TupleList, the Nth element Term of the tuple has been replaced with the result of calling Fun(Term).Example
con_lists:keymap(fun(X) -> X div 2 end, 2, [{a, 329}, {b, 276}, {c, 323}, {d, 430}], 10000).
map(Fun, List) -> List1 | timeout
Equivalent to con_lists:map(Fun, List, 10000).
map(Fun, List, Timeout) -> List1 | timeout
Type
Fun = fun((A) -> B) List = [A] List1 = [B] A = B = term() Timeout = integer() | infinityDescription
Takes a function from As to Bs, and a list of As and produces a list of Bs by applying the function to every element in the list. This function is used to obtain the return values. The evaluation order depends on the implementation.Example
con_lists:map(fun(X) -> X*2 end, [1, 2, 3, 4, 5], 10000).
partition(Fun, List) -> {Satisfying, NotSatisfying} | timeout
Equivalent to con_lists:partition(Fun, List, 10000).
partition(Fun, List, Timeout) -> {Satisfying, NotSatisfying} | timeout
Type
Fun = fun((Ele :: T) -> boolean()) List = Satisfying = NotSatisfying = [T] T = term() Timeout = integer() | infinityDescription
Partitions List into twolists, where the first list contains all elements for which Fun(Ele) returns true, and the second list contains all elements for which Fun(Ele) returns false.Example
con_lists:partition(fun(X) -> X rem 2 == 0 end, [454, 431, 272, 359, 280, 457, 430, 479], 10000).
Generated by EDoc


Movie Review: Who Framed Roger Rabbit? By Joseph Toscano
-- June 1988 [PG] 103 Minutes, 1.7 hours Directed by Robert Zemeckis Starring Bob Hoskins, Christopher Lloyd, Joanna Cassidy, Charles Fleischer Score: **** / ***** or 7 / 10 SPOILER WARNING - some of the review may contain information regarding the plot of the movie. If you haven't seen it already, take caution. --
WHO FRAMED ROGER RABBIT? in a nutshell brings two worlds together that many people have always dreamed about. The world of animated characters and fantastical lore meet the real human world. Specifically the live and wild one called, "Hollywood."
If the special effects in WHO FRAMED ROGER RABBIT? had been done in a poor manner, then the whole movie would be change. But fortunately, Ken Ralston, of Star Wars and Forrest Gump fame, has done a splendid job in meshing the two worlds together.
As the tagline suggests, the film is about a man, a rabbit and a woman in a triangle of trouble. The plot is set in Hollywood 1949, with the sets and clothes perfectly matched for the time period. A mile away from the Maroon Cartoon studios is a tunnel that leads to a town called Toon Town, which is the home of the toons.  Their team always cracked the important toon cases, and they were admired until the accident. Now Eddie is assigned to a new job, and it unfolds into a plot to destroy Toon Town, and those loveable toons.
Although the plot is a bit disjointed in a few spots, it holds together well enough because of the magic of the toons. The toons are crazy, so when the plot takes odd twists, it makes sense.
There are many strengths in this film, and they do far outweigh the weaknesses. The acting of Eddie Valiant (Bob Hoskins) and Judge Doom (Christopher Lloyd) make the picture soar in parts. Hoskins plays a great burnt out PI, and on top of that, he's usually acting solo since there really isn't a Rabbit named Roger speaking to him. He conveys great emotion without even having another actor to speak to.
Another strength is the humor. It's done in a brilliant way, with the toons and humans, and you find yourself cracking up at things that you normally wouldn't. The voice acting of the talented Charles Fleischer, as he plays four characters in the film, also elicits some chuckles. The simple premise of mixing these two worlds alone just produces laughter, as it's a fresh, new idea.
The humor, along with the suspense of the storyline create a good atmosphere. I've always liked when movies are two or more movies in one. Like this one, which is a mystery and a comedy in one. And Zemeckis manages to pull it off without making it look too corny.
Musical score can be 50% of a movie sometimes. In the case of WHO FRAMED ROGER RABBIT?, composer Alan Silvestri creates a brilliant score that captures the very essence of the movie. Written with an old time jazz feeling, the score soars at all times, making some scenes ooze with a sense of completion. The music in this film deserved at least an Oscar nomination, as it's wonderfully written and styled.
Although the ending could use some adjustment, it is one of the most suspenseful and hilarious closings to a movie that have come along. Although movies don't need to always end with the bad guy getting clocked, in this case it was almost needed, especially when the badguy is seemingly invincible.
The film passes along a message through the mayhem of the toons, which is that laughter is important. Sometimes laughter is the only thing we have. And with all the laughs produced by the film, it does carry the message well.
WHO FRAMED ROGER RABBIT? ends with style, and you'll find youself chuckling as the credits roll, recalling events that occured during the film. Even though quirky, corny, and confusing a few times, the movie creates a sense of funny wonder, and definately does not dissapoint.
-- Joseph Toscano (January 9, 1998<EMAIL_ADDRESS>The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


In the GUI below, choose two line segments in the plane (z = 0) to test your code. Left click to select the first point and right click to select the second point. The intersection will be re-computed real time and drawn as a black point as soon as both segments have two points selected. If no intersection occurs, no black point will be drawn


nips nips2000 nips2000-95 nips2000-95-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Christopher K. I. Williams
Abstract: In this paper we show that the kernel peA algorithm of Sch6lkopf et al (1998) can be interpreted as a form of metric multidimensional scaling (MDS) when the kernel function k(x, y) is isotropic, i.e. it depends only on Ilx - yll. This leads to a metric MDS algorithm where the desired configuration of points is found via the solution of an eigenproblem rather than through the iterative optimization of the stress objective function. The question of kernel choice is also discussed. 1
[1] C. Berg, J. P. R. Christensen, and P. Ressel. Harmonic Analysis on Semigroups. Springer-Verlag, New York, 1984.
[2] T. F. Cox and M. A. A. Cox. Multidimensional Scaling. Chapman and Hall, London, 1994.
[3] F. Critchley. Multidimensionsal scaling: a short critique and a new method. In L. C. A Corsten and J. Hermans, editors, COMPSTAT 1978. Physica-Verlag, Vienna, 1978.
[4] J. B. Kruskal and M. Wish. Multidimensional Scaling. Sage Publications, Beverly Hills, 1978.
[5] Mardia, K V. and Kent, J. T. and Bibby, J. M. Multivariate Analysis. Academic Press, 1979.
[6] J. W. Sammon. A nonlinear mapping for data structure analysis. IEEE Trans. on Computers, 18:401-409, 1969.
[7] B. Scholkopf, A. Smola, and K-R. Muller. Nonlinear component analysis as a kernel eigenvalue problem. Neural Computation, 10:1299- 1319, 1998.
[8] V. N. Vapnik. The nature of statistical learning theory. Springer Verlag, New York, 1995.
[9] G. Wahba. Spline models for observational data. Society for Industrial and Applied Mathematics, Philadelphia, PA, 1990. CBMS-NSF Regional Conference series in applied mathematics.
[10] C. K I. Williams and D . Barber. Bayesian classification with Gaussian processes. IEEE Transactions on Pattern Analysis and Machine Intelligence, 20(12):1342- 1351, 1998.
[11] A. M. Yaglom. Correlation Theory of Stationary and Related Random Functions Volume I:Basic Results. Springer Verlag, 1987.


The quotek rand generators namespace contains c++11 distributions wrappers which add an extra abstraction layer and also fit the quotek dataset format. It mainly allows to generate randoml value datasets having different kinds of distributions, which can prove really useful for financial modeling.
quotek::rand::
generators
¶Functions
uniform
(int size, float min, float max)¶Generates a set of random values which are uniformly distributed.
size
- number of values we want in the dataset.
min
- Minimum value that must be present inside result dataset.
max
- Maximum value that must be present inside result dataset.
normal
(int size, float mean, float sigma)¶Generates a set of random values which are normally distributed. (probaly the most useful to modelize asset prices)
size
- number of values we want in the dataset.
mean
- average value we want for our generator.
sigma
- wanted standard deviation.
lognormal
(int size, float mean, float sigma)¶Generates a set of random values which are log-normally distributed.
size
- number of values we want in the dataset.
mean
- mean we want to use for the underlying normal distribution. value we want for our generator.
sigma
- standard deviation we want to use for the underlying normal distribution.
binomial
(int size, int experiments, float success_probability)¶Generates a set of random values which are distributed using a binomial law.
size
- number of values we want in the dataset.
experiments
- the number of tries for a number
success_probability
- probability that each experiment succeeds .
poisson
(int size, int average_occurence)¶Generates a set of random values which are distributed using a poisson law.
size
- number of values we want in the dataset.
average_occurence
- number of times an event must occur on everage for the series.


{% trans "Password Reset" %}
{% trans "Forgotten your password?  %}
{% blocktrans %}Please contact us if you have any trouble resetting your password.{% endblocktrans %}


--- layout: page title: Projects header: My adventures in possibly non-music related things. group: projects ---
I created Eigengrau's Generator, a SugarCube app that creates randomly generated towns for fantasy settings like Dungeons and Dragons. This was my first foray into code, and I found that it was quite enjoyable. Follow my posts tagged #eigengrau for updates on the generator.
I am the editor (read: chief trash lord) of Art Music Memes. I make bad memes related to classical music. I've sometimes even been paid to do so. I've cultivated a fanbase of over 30,000 middle to upper-class socioeconomic followers, with the 18-24 demographic making up over 60% of these followers; a valuable and elusive group for the classical music industry. For sponsored posts on the page, you can contact me at<EMAIL_ADDRESS>I was the founding president of the Tasmania University Union Musician's Society, which is the peak body of representation amongst the University of Tasmania community.


{% extends 'templates/nhs_transaction_layout.html' %} {% import 'includes/form_macros.html' as form_macros %} {% block afterHeader %} {% include "includes/service-headers/low-income-new.html" %} {% endblock %} {% block content %} Step 3 Get your certificate You will need to show a copy of this information whenever you want to use it. Email (another) copy Print Download PDF 9.97KB Request a paper copy
You will need to show a copy of this information whenever you want to use it.
Email (another) copy
Print
Download PDF 9.97KB
Request a paper copy


Let's complete the alphabet with gacha!
The 26 alphabets from A to Z are used to play gacha!. Use "RND" to play.
Let's display the collection.
Until complete, automatic gacha!
How much will it cost?
Let's make "A" to be rare.
Make a probability of it becoming "B" be 9/10 even if "A" comes out.
Try it!
1. Let' try three times, and compare
2. Let's make it to be rare from "A" to "F"
3. Let's make sure that "Z" does not come out
4. Let's come out "Z" by a probability of 1/2
5. Let's make it to not go onto each other (not become same)


Compatibility of Couchbase Features, Couchbase Versions and the Couchbase Java SDK
Couchbase Version/SDK Version Matrix
Couchbase SDKs are tested against a variety of different environments to ensure both backward and forward compatibility with different versions of Couchbase Server. The matrix below denotes the version of Couchbase Server, the version of the Java SDK, and whether the SDK is:
-
✖ Unsupported: This combination is not tested, and is not within the scope of technical support if you have purchased a support agreement.
-
◎ Compatible: This combination has been tested previously, and should be compatible. This combination is not recommended by our technical support organization. It is best to upgrade either the SDK or the Couchbase version you are using.
-
✔ Supported:This combination is subject to ongoing quality assurance, and is fully supported by our technical support organization.
| SDK 2.2, 2.3 | SDK 2.4, 2.5 | SDK 2.6 | SDK 2.7 | |
|---|---|---|---|---|
Server 4.0-4.5 |
◎ |
✔ |
✔ |
✔ |
Server 4.6 |
◎ |
✔ |
✔ |
✔ |
Server 5.0-5.5 |
◎ |
✔ |
✔ |
✔ |
Server 6.0 |
✖ |
✔ |
✔ |
✔ |
Note the End of Life dates for Couchbase Server and SDK versions. See the notes there for Support details.
To take advantage of all features offered by Couchbase Server, you need to know what version of the Java SDK provides compatibility for the features you want to use. The following matrix shows which versions of the Couchbase Java SDK support the major features of each version of Couchbase Server.
| Server 4.0, 4.1 | Server 4.5, 4.6 | Server 5.x | Server 6.0 | |
|---|---|---|---|---|
Basic Features |
||||
CRUD Operations |
All Versions |
|||
View Querying APIs |
All Versions |
|||
Geospatial Views |
All Versions |
|||
Advanced Features |
||||
Durability Requirements |
Since 1.1 |
|||
Carrier Publication Configuration |
All Versions |
|||
SSL Connectivity |
All Versions |
|||
Bulk Operations |
All Versions |
|||
N1QL Querying |
All Versions |
|||
Multi-Dimensional Scaling |
All Versions |
|||
Sub-document API |
Since 2.3 |
|||
Full Text Search |
Since 2.3 (Experimental) |
Since 2.4 |
||
Global Secondary Indexes (GSI) |
All Versions |
|||
Memory Optimized Indexes (MOI) |
Not Supported |
All SDK versions |
||
Plasma Storage for Indexes |
Not Supported |
All SDK versions |
||
FTS Index Management from the SDK |
Not Supported |
Since 2.3 |
||
Data Structures |
Not Supported |
Since 2.3 |
||
Extended Attributes |
Not Supported |
Since 2.4 |
||
RBAC |
Not Supported |
Since 2.4 |
||
Analytics |
Not supported |
DP in 5.5 with 2.6 |
Since 2.7 |
|
Administrative Features |
||||
Administrative API |
All Versions |
| With RBAC, in Couchbase Server 5.0, authentication will depend upon access privileges, and upgrading to 5.0 with existing buckets, or upgrading Server, will require taking these changes into account. |
JDK Version Compatibility
The Java SDK is tested with the Oracle JDK which should be used for best experience and supportability. Other JDK implementations might work but are not tested and are unsupported.
The following Oracle JDKs are supported for Java SDK 1.4 and 2.0 - 2.7:
-
Oracle JDK 1.6
-
Oracle JDK 1.7
-
Oracle JDK 1.8 (recommended)
Please make sure you run on one of the latest patch releases, since they provide stability improvements and security fixes in general.
Spring Data Couchbase Compatibility
Spring Data Couchbase uses the Java SDK underneath and as a result is also provides different compatibilities with Couchbase Server. The following table provides an overview.
| SDC 2.2.x | SDC 3.0 & 3.1 | |
|---|---|---|
Status > |
Bug fixes only |
New Features, Active Development |
Server 4.x |
Compatible |
Recommended |
Server 5.x |
Compatible |
Recommended |
Server 6.0 |
Compatible |
Recommended |
Migrating from Java SDK 1.4.x to 2.x
Couchbase recommends that you migrate to the Java 2.x SDK to take advantage of enhancements to the SDK as well as new features available in Couchbase Server.
The 2.x Java SDK is based on the reactive programming model and has a different architecture that uses a core I/O layer and a Java client layer. It’s asynchronous by design and offers performance, scalability, and durability enhancements.
This guide helps you migrate from the previous generation of the Java SDK (version 1.4.x
) to this new generation SDK (version 2.x
).
If you plan on using the synchronous blocking API, you can follow the simple migration path. Or, you can follow the optional migration path to fully reactive and asynchronous code by using the asynchronous API, which provides the best performance.
To get the full benefit of using the asynchronous code with this new generation SDK, you need to understand how to build asynchronous yet expressive code by leveraging the Observable
paradigm.
The Asynchronous Progamming Using the Java SDK with Couchbase Server has more information on reactive programming with the Java SDK.
1.x-2.x Migration: Getting Started
The 2.x generation of the Java SDK is a complete rewrite of the 1.x SDK.
It is layered into core-io
and java-client
pieces.
The java-client
layer is more abstract and closer to the client.
The core-io
layer is purely asynchronous and message-oriented.
It makes use of a reactive architecture based on Netty, the LMAX Disruptor, and most importantly RxJava.
The core-io layer is not intended for broad consumption.
In general, you should focus on using the java-client layer in your application.
For advanced use cases, when you are trying to squeeze out the very last drop of performance working with the raw byte stream or building a client layer in another language, you can use the core-io layer.
|
The client exposes the server-side concepts of a Cluster
and Bucket
s as first-class citizens that replace the previous CouchbaseClient
class.
Each class exposes a synchronous API by default, but an asynchronous API (based on RxJava Observable
objects) can be accessed simply by calling async()
on either one.
This split also allows for much more efficient resource utilization.
In the past, each CouchbaseClient
(for each bucket) had its resources, but now they are as shared as much as possible, and the Cluster
and Bucket
references can always be reused.
The Maven
artifact has been renamed from couchbase-client
to java-client to differentiate this rewrite from the previous generation.
It has minimal transitive dependencies (by embedding a few internal dependencies like Netty), most notably RxJava 1.x:
<dependencies>
<dependency>
<groupId>com.couchbase.client</groupId>
<artifactId>java-client</artifactId>
<version>2.7.0</version>
</dependency>
</dependencies>
After you’ve fully migrated, make sure that old dependencies to couchbase-client or dependencies introduced in your POM because of the couchbase-client have been removed.
|
You’ll most probably want the SDK to perform some logging, which can easily be activated by adding a logging framework such as log4j to your dependencies. For more information about configuring logging, see Collecting Information and Logging in the Java SDK with Couchbase Server.
1.x-2.x Migration: Cluster Connections
CouchbaseClient
is replaced by the Cluster
and Bucket
classes, bringing real-world concepts of Couchbase into the SDK as first-class citizens.
For more information about using these classes, see Managing Connections using the Java SDK with Couchbase Server.
Compared to the 1.4.x SDK, when providing a list of nodes for bootstrapping, you only need hostnames or IP addresses in String
form.
No need for the URI anymore, and no need for the port and pools path either:
Cluster cluster = CouchbaseCluster.create("<IP_ADDRESS>");
The SDK uses the factory method pattern to create the Cluster object. This pattern is heavily used throughout the SDK in place of constructors.
The Cluster
and each Bucket
reference must be reused as much as possible.
Make them singletons, which can be used by multiple threads safely.
Here’s an example that uses a naive helper approach:
public class CouchbaseHelper {
//the IPs / hostnames would be obtained from configuration file
private static final List<String> SEED_IPS = Arrays.asList("<IP_ADDRESS>", "<IP_ADDRESS>");
public static final Cluster CLUSTER = CouchbaseCluster.create(SEED_IPS);
public static final Bucket EXAMPLEBUCKET = CLUSTER.openBucket("example", "p4ssW0rd");
}
You can customize the connection to the Cluster
via the CouchbaseEnvironment
interface.
public class CouchbaseHelper {
//the IPs / hostnames would be obtained from configuration file
private static final List<String> SEED_IPS = Arrays.asList("<IP_ADDRESS>", "<IP_ADDRESS>");
//the environment configuration
private static final CouchbaseEnvironment ENV = DefaultCouchbaseEnvironment.builder()
.connectTimeout(8 * 1000) // 8 Seconds in milliseconds
.keepAliveInterval(3600 * 1000) // 3600 Seconds in milliseconds
.build();
public static final Cluster CLUSTER = CouchbaseCluster.create(ENV, SEED_IPS);
public static final Bucket EXAMPLEBUCKET = CLUSTER.openBucket("example", "p4ssW0rd");
}
1.x-2.x Migration: Document Operations
In the new SDK, a new model of data within Couchbase was introduced: the Document
class.
It encapsulates both the content itself and the metadata ( id
, expiry
and cas
information).
The CRUD Document Operations Using the Java SDK with Couchbase Server page shows more specifics regarding document operations with the 2.x version of the SDK.
The SDK has several implementations of Document
.
By default, most SDK methods assume the content is JSON and return a JsonDocument
.
This kind of document use standardized storing flags, which make it compatible with the other second generation SDKs in other languages.
If you already deal with JSON transcoding to domain objects, use the RawJsonDocument
instead, which exposes the JSON String as content instead of a superfluous JsonObject
.
To interact with documents stored by an older Java SDK, use the LegacyDocument class.
This class provides 1:1 compatibility with the 1.4 SDK, but consider to migrate to a new implementation after backward compatibility isn’t required anymore.
|
Concerning optimistic locking—because the CAS is now part of the Document
, the SDK picks it up if it is non-zero during mutating operations.
1.x-2.x Migrations: Reactive and Batched Programming
In the 2.x SDK, asynchronous processing is done via RxJava.
The asynchronous API is not mixed with the synchronous API, but rather accessible via the async()
method on Cluster
and Bucket
.
The SDK is thread-safe and uses a pool of threads internally for operations (so they are effectively processed in a separate thread).
Additionally, some Rx operators use one of the Schedulers
provided by RxJava (meaning it could execute in another thread).
The SDK doesn’t use Future
objects anymore.
For progressive migration purposes, you can convert an Observable
into a Future
and vice versa.
Here’s an example of how to do that:
//converting these to/from Future
Observable<String> myStringObservable;
Future<String> myStringFuture;
//this expects exactly one item emitted
Future<String> f = myStringObservable.toBlocking().toFuture();
//when several items expected, use a List
Future<List<String>> f = myStringObservable.toList().toBlocking().toFuture();
//convert back from a Future<String>
Observable<String> o = Observable.from(myStringFuture)
Interface Stability
Couchbase SDKs indicate the stability of an API through documentation. Since there are different meanings when developers mention stability, we mean interface stability: how likely the interface is to change or be removed entirely. A stable interface is one that is guaranteed not to change between versions, meaning that you may use an API of a given SDK version and be assured that the given API will retain the same parameters and behavior in subsequent versions. An unstable interface is one which may appear to work or behave in a specific way within a given SDK version, but may change in its behavior or arguments in future SDK versions, causing odd application behavior or compiler/API usage errors. Implementation stability is implied to be more reliable at higher levels, but all are tested to the level that is appropriate for their stability.
Couchbase uses three interface stability classifiers. You may find these classifiers appended as annotations or comments within documentation for each API:
-
Committed: This stability level is used to indicate the most stable interfaces that are guaranteed to be supported and remain stable between SDK versions.
-
Uncommitted: This level is used to indicate APIs that are unlikely to change, but may still change as final consensus on their behavior has not yet been reached. Uncommitted APIs usually end up becoming stable APIs.
-
Volatile: This level is used to indicate experimental APIs that are still in flux and may likely be changed. It may also be used to indicate inherently private APIs that may be exposed, but "YMMV" (your mileage may vary) principles apply. Volatile APIs typically end up being promoted to Uncommitted after undergoing some modifications.
-
Internal: This level is used to indicate you should not rely on this API as it is not intended for use outside the module, even to other Couchbase components.
APIs that are marked as Committed have a stable implementation. Uncommitted and Volatile APIs should be stable within the bounds of any known and often documented issues, but Couchbase has not made a commitment to these APIs and may not respond to reported defects with the same priority.


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referenced
by Vickie Karasic at 2023-05-10 00:54:46.merged
by Vickie Karasic at 2023-05-10 00:54:46.closed
by Vickie Karasic at 2023-05-10 00:54:46.referenced
by Christina Chortaria at 2023-05-10 11:36:11.merged
by Christina Chortaria at 2023-05-10 11:36:11.closed
by Christina Chortaria at 2023-05-10 11:36:11.head_ref_deleted
by Christina Chortaria at 2023-05-10 11:36:12.labeled
by None at 2023-05-10 12:35:49.assigned
by None at 2023-05-10 12:35:49.closed
by None at 2023-05-11 00:21:20.assigned
by None at 2023-05-11 00:24:44.referenced
by Vickie Karasic at 2023-05-10 18:01:15.merged
by Vickie Karasic at 2023-05-10 18:01:15.closed
by Vickie Karasic at 2023-05-10 18:01:15.labeled
by Kevin Reiss at 2023-05-10 17:24:28.labeled
by None at 2023-05-10 17:41:37.labeled
by None at 2023-05-10 14:51:55.labeled
by None at 2023-05-10 14:51:55.labeled
by None at 2023-05-10 15:05:43.labeled
by None at 2023-05-10 15:05:43.Error message received:
labeled
by None at 2023-05-10 15:16:30.labeled
by None at 2023-05-10 15:16:30.labeled
by None at 2023-05-10 15:16:30.labeled
by None at 2023-05-10 15:23:06.labeled
by None at 2023-05-10 15:23:06.labeled
by None at 2023-05-10 15:23:06.labeled
by None at 2023-05-10 17:43:39.unlabeled
by None at 2023-05-10 19:13:23.the problem query is https://github.com/pulibrary/figgy/blob/86febab645b626b62ad8d379fd2a8befa842ff23/app/controllers/fixity_dashboard_controller.rb#L13
The one a few lines up for the cloud successes is also a bit slow, but there must be fewer of them than for the local checks.
assigned
by None at 2023-05-10 19:14:18.Before completion, it is backed up (the isilon is backed up to AWS). At completion, it is preserved, and will be recoverable via the deletion marker UI.
We decided to use the complete state to trigger preservation, as initially proposed in this ticket.
Still to determine: What happens visually when you click the "report" button?
The consensus is that, at a minimum, there will be some system notification to the user that the issue was reported. This may be a flash alert or animation that confirms it was successfully reported (or not). Th state of which files have been reported would not be saved on the server.
Note: If state is not saved, it could be hard for a user to know which issues have been reported or not if there are a lot of errors in the Filemanager interface. We could mitigate this confusion by storing ids that have been reported locally on the client, saving the state at least for the duration of the user's session or until they clear their cookies.
ready_for_review
by None at 2023-05-10 17:05:25.referenced
by None at 2023-05-10 17:20:05.merged
by None at 2023-05-10 17:20:05.closed
by None at 2023-05-10 17:20:05.head_ref_deleted
by None at 2023-05-10 17:20:09.referenced
by Jane Sandberg at 2023-05-10 17:31:23.merged
by Jane Sandberg at 2023-05-10 17:31:23.closed
by Jane Sandberg at 2023-05-10 17:31:23.Coverage: 95.215% (-0.03%) from 95.249% when pulling 993e2228587ffc7753d9845a96c0742a272be30f on dry-openurl-behavior into 5862a638b8245c811271ddab58c7158473ab9115 on main.
head_ref_force_pushed
by Jane Sandberg at 2023-05-09 22:19:38.referenced
by Christina Chortaria at 2023-05-10 11:08:59.merged
by Christina Chortaria at 2023-05-10 11:08:59.closed
by Christina Chortaria at 2023-05-10 11:08:59.head_ref_deleted
by Christina Chortaria at 2023-05-10 11:09:00.assigned
by Kevin Reiss at 2023-05-10 20:10:11.Coverage: 95.214% (-0.002%) from 95.215% when pulling ca00a4991796ee7f4efad3fab81f8ff4209fdca4 on 3512-requestsjs into 2b2de056363f912003a43dd98aff49bcfe6df795 on main.
head_ref_force_pushed
by Christina Chortaria at 2023-05-10 21:20:40.referenced
by Hector Correa at 2023-05-10 11:31:16.merged
by Hector Correa at 2023-05-10 11:31:16.closed
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by Bess Sadler at 2023-05-10 13:24:25.PRDS is still discussing how to handle this usability issue.
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by Francis Kayiwa at 2023-05-10 14:23:46.merged
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by Kate Lynch at 2023-05-10 18:38:09.


001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 package org.apache.shiro.authc; 020 021 import java.io.Serializable; 022 023 /** 024 *
An <tt>AuthenticationToken</tt> is a consolidation of an account's principals and supporting 025 * credentials submitted by a user during an authentication attempt. 026 *
 027 *
The token is submitted to an {@link Authenticator Authenticator} via the 028 * {@link Authenticator#authenticate(AuthenticationToken) authenticate(token)} method. The 029 * Authenticator then executes the authentication/log-in process. 030 *
 031 *
Common implementations of an <tt>AuthenticationToken</tt> would have username/password 032 * pairs, X.509 Certificate, PGP key, or anything else you can think of. The token can be 033 * anything needed by an {@link Authenticator} to authenticate properly. 034 *
 035 *
Because applications represent user data and credentials in different ways, implementations 036 * of this interface are application-specific. You are free to acquire a user's principals and 037 * credentials however you wish (e.g. web form, Swing form, fingerprint identification, etc) and 038 * then submit them to the Shiro framework in the form of an implementation of this 039 * interface. 040 *
 041 *
If your application's authentication process is username/password based 042 * (like most), instead of implementing this interface yourself, take a look at the 043 * {@link UsernamePasswordToken UsernamePasswordToken} class, as it is probably sufficient for your needs. 044 *
 045 *
RememberMe services are enabled for a token if they implement a sub-interface of this one, called 046 * {@link RememberMeAuthenticationToken RememberMeAuthenticationToken}. Implement that interfac if you need 047 * RememberMe services (the <tt>UsernamePasswordToken</tt> already implements this interface). 048 *
 049 *
If you are familiar with JAAS, an <tt>AuthenticationToken</tt> replaces the concept of a 050 * {@link javax.security.auth.callback.Callback}, and defines meaningful behavior 051 * (<tt>Callback</tt> is just a marker interface, and of little use). We 052 * also think the name AuthenticationToken more accurately reflects its true purpose 053 * in a login framework, whereas Callback is less obvious. 054 * 055 * @see RememberMeAuthenticationToken 056 * @see HostAuthenticationToken 057 * @see UsernamePasswordToken 058 * @since 0.1 059 */ 060 public interface AuthenticationToken extends Serializable { 061 062 /** 063 * Returns the account identity submitted during the authentication process. 064 *
 065 *
Most application authentications are username/password based and have this 066 * object represent a username. If this is the case for your application, 067 * take a look at the {@link UsernamePasswordToken UsernamePasswordToken}, as it is probably 068 * sufficient for your use. 069 *
 070 *
Ultimately, the object returned is application specific and can represent 071 * any account identity (user id, X.509 certificate, etc). 072 * 073 * @return the account identity submitted during the authentication process. 074 * @see UsernamePasswordToken 075 */ 076 Object getPrincipal(); 077 078 /** 079 * Returns the credentials submitted by the user during the authentication process that verifies 080 * the submitted {@link #getPrincipal() account identity}. 081 *
 082 *
Most application authentications are username/password based and have this object 083 * represent a submitted password. If this is the case for your application, 084 * take a look at the {@link UsernamePasswordToken UsernamePasswordToken}, as it is probably 085 * sufficient for your use. 086 *
 087 *
Ultimately, the credentials Object returned is application specific and can represent 088 * any credential mechanism. 089 * 090 * @return the credential submitted by the user during the authentication process. 091 */ 092 Object getCredentials(); 093 094 }


Baseball Trivia
Time Remaining: 30
Barry Bonds
Willie McCovey
Willie Mays
Jack Johnson
Willie McCovey
Willie Mays
Jack Johnson
Willie "Big Stretch" McCovey is the most beloved San Francisco Giant of all-time. In 1968, he hit 36 HRs
and batted in 105 runs. In 1969, he had 45 HRs and 126 RBIs. Overall, McCovey belted 469 home runs and
batted in 1388 runs for the Giants.
New York Whipper Snappers
New York Yankees
New Jersey Jackrabbits
New York Gothams
New York Yankees
New Jersey Jackrabbits
New York Gothams
The franchise came to be in 1883 under the helm of John Clapp. Their first season saw them finish 46-50,
sixth place of eight teams in the National League. The team was led by catcher Buck Ewing and pitcher Mickey
Welch. The Gothams would win 62 games in 1884, then with the name change of Giants, they went 85-27 in 1885
under manager Jim Mutrie.
Willie McCovey
Barry Bonds
Brandon Belt
Babe Ruth
Barry Bonds
Brandon Belt
Babe Ruth
This ball was hit over the right field wall into the Pacific Ocean against Rich Rodriguez on May 1st, 2000.
1902
1975
1888
Never
1975
1888
Never
The New York Giants won the NL pennant by nine games over the Chicago White Stockings (later Cubs). They
would go on to play and exhibition "World Series" against the St. Louis Browns of the American Association,
and win six games to four. All prior championship series prior to 1903 were officially considered exhibition games.
Freddie Mercury
Rich Aurelia
Barry Bonds
J.T. Snow
Rich Aurelia
Barry Bonds
J.T. Snow
J.T. Snow led the team with 11 hits, he went 11 for 27 which is a .407 batting average.
What is the favorite team of the programmer who made this website?
Giants
Warriors
49ers
Sharks
All of the above
Warriors
49ers
Sharks
All of the above


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I am currently a UTCS senior who is planning on graduating in December 2016.
Transferred into the CS program at the University of Texas from King Fahd's University of Petroleum and Minerals from his home country of Saudi Arabia. Is interested in learning more about networks and security.
Likes to blow things up back in Tyler, Texas. Is a very experienced full stack developer at SpiceWorks here in Austin, Texas. Loves Zoidberg.
Incoming junior. Computer science major.
Incoming junior. Likes to mess with design and innovative ideas.
Senior computer science major. Hopes to graduate by December 2016.


Technical Lead, Artist
I am currently leading various projects @IndMoney, a fintech startup based out of India. My role is to guide, design & handle both architectural & code related decisions on the product. I am based out of Bengaluru, India.
I have worked extensively in Python(Flask & Django), GoLang(Revel & Gin) & Postgresql and have a strong background in algorithms & data structures.
Having previously contributed my talents to Goibibo/MakeMyTrip, I have honed my problem-solving skills and developed a strong foundation for seamless execution.
Download ResumePython, Flask, Djnago, GoLang, Node Js, C++, PostgreSQL, Vue JS, HTML, CSS, JavaScript, OpenCV, GCP, GIT, AWS
Npm module/command line tool to add your files to gist easily. There is no need for you to open up your account to upload a gist. Just write your code/content in a file and name the file as you would in the gist. Then upload it to your account (publicly or privately accessible) using the command line.
Know morelterm is an online Terminal Emulator. It is a step by step tutorial that will teach you the bash commands by making you execute them.
Know moreThe book I am currently reading...
The Secrets of Vesuvius
by Caroline Lawrence


--- title: Henry Miller on Writing date: '2015-06-14T19:00:19+05:30' tags: - misc tumblr_url: https://sureshshanmugam.com/post/121503535681/henry-miller-on-writing --- Henry Miller on Writing


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--- layout: post title: Cluster at home date: 2015-08-24 08:42:44.000000000 +02:00 type: post published: true status: publish categories: - Various redirect_from: - /2015/08/23/cluster-at-home/ - /2015/08/24/cluster-at-home/ - /2015/08/25/cluster-at-home/ tags: [] meta: _edit_last: '1' _responsive_layout: default _publicize_twitter_user: "@gerbrandvd" author: login: admin email<EMAIL_ADDRESS>display_name: gerbrand first_name: Gerbrand last_name: van Dieijen ---
When I was a student I had old desktop computer in running in the closet which acted as a server. The server hosted my homepage, email-domain, fileserver and sort of cloud storage. The internet-connection, being part of the university's campus network was very fast and reliable. Of course the set up could occasionally fail some component of my desktop failed or someone accidentally unplugged the server to use the vacuum cleaner.
When I wanted my email to be a bit more reliable, rather then spending time on setting up a fail-over I decided to use a spent a few euros per month on a hosting party. Nevertheless, running a server, or better, a cluster of servers at home would still be cool. This guy does it, creating a cluster of raspberry-pies in his basement. I am getting envy, maybe time for me to something simelar again. After all, the internet-connection in the Netherlands is a whole lot better than in the United States - for slightly more than twenty euros you'll get a 20mbit upload.


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rational numbers. It applies to integers and produces extended integers.
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that is, _1 x: y is the same as x:^:_1 y and _2 x: y
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|


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--- layout: post status: publish published: true title: TTDD - Tautological Test Driven Development (Anti Pattern) author: display_name: Fabio Pereira login: admin email<EMAIL_ADDRESS>url: http://fabiopereira.me author_login: admin author_email<EMAIL_ADDRESS>author_url: http://fabiopereira.me wordpress_id: 285 wordpress_url: http://fabiopereira.me/blog/2010/05/25/ttdd-tautological-test-driven-development-anti-pattern/ date: '2010-05-27 04:21:00 +1000' date_gmt: '2010-05-27 11:21:00 +1000' categories: - Technical tags: - Java - Code - TDD comments: - id: 6868 author: isaiah author_email<EMAIL_ADDRESS>author_url: http://isaiahperumalla.wordpress.com date: '2010-05-27 02:16:20 +1000' date_gmt: '2010-05-27 09:16:20 +1000' content: "good post, i find this is common test smell, where test code simply duplicates production code, this may also be a hint that your object is exposing its internal through it public api. I tend not to use mocks, if the the collaborator does not change the state of the environment but is just being queried by the object under test. In this case i use light-weight fake implementation which give back canned results for queries.\r\nIn your example i, there is not much else happening in the CarRepository apart from forwarding calls to the carService, I would probably just write an integration-test to test the car repository" - id: 6871 author: Fabio Pereira author_email<EMAIL_ADDRESS>author_url: http://fabiopereira.me date: '2010-05-27 04:25:41 +1000' date_gmt: '2010-05-27 11:25:41 +1000' content: "@isaiah \r\nHi Isaiah, thanks for the feedback. \r\nYou are right about the fact that there's not much happening in CarRepository, this example is didactic, in the real world this class would be more complex.\r\nI quite liked your description of \"light-weight fake implementation\", I think that's what I called Stubs. I attached the code to the post if you could download, it'd be good to get some feedback from you if that's what I meant. Have a look at the classes: \r\nCarServiceStub and ServiceHeaderFactoryStub.\r\nCheers," - id: 6877 author: 'The Morning Brew - Chris Alcock » The Morning Brew #610' author_email: '' author_url: http://blog.cwa.me.uk/2010/05/28/the-morning-brew-610/ date: '2010-05-28 00:38:24 +1000' date_gmt: '2010-05-28 07:38:24 +1000' content: '[...] TTDD - Tautological Test Driven Development (Anti Pattern) - Fabio Pereira discusses an anti-pattern in testing where a test’s set up is very similar to a test’s asserts meaning that the asserts are a re-statement of the setup, which results in a lack of meaning to any result. [...]' - id: 6917 author: Rafael Peixoto de Azevedo author_email<EMAIL_ADDRESS>author_url: http://symprise.net date: '2010-05-31 08:55:14 +1000' date_gmt: '2010-05-31 15:55:14 +1000' content: "Great post about a fundamental testing issue, Fabio!\r\n\r\nWhen the behaviour of an object under test depends on its context, the tests must provide controlled instances of the necessary contextual objects. I usually prefer to represent them using the simplest forms of double objects.\r\n\r\nSo, I use a mock object to represent a contextual object only when the precise way how the interactions proceed with the object under test is essential to its expected behaviour.\r\n\r\nOtherwise the excessive accidental complexity can easily delude us into writing ineffective tests that are either devoid of relevant assertions or based on tautological thinking.\r\n\r\nI think you have just nailed down the TTDD anti-pattern with a clear example and the perfect name.\r\n\r\nCheers, Rafael" - id: 7014 author: James Carr author_email<EMAIL_ADDRESS>author_url: http://blog.james-carr.org date: '2010-06-11 13:12:24 +1000' date_gmt: '2010-06-11 20:12:24 +1000' content: "Good post. This is a concept I often teach people as well and as a rule of thumb I tell them they should never do a verify against a stub. In your example, both collaborators are providing indirect inputs to the system and in your corrected test case you do the right thing, providing those indirect inputs and verifying the actual behavior of the system under test. \r\n\r\nVerifying a call to a collaborator that provides another indirect input to the system is BAD. I could easily take your first test and in the implementation still call the carService and return null. The code is broken in a horrible way but the test will always pass. Doh! :)" - id: 8236 author: Test Harder and Smarter | Just about .NET author_email: '' author_url: http://www.just-about.net/?p=392 date: '2010-09-27 02:11:17 +1000' date_gmt: '2010-09-27 09:11:17 +1000' content: '[...] and must always kept running.  It is more a question of “how shall I use it” instead of “Too Damn [...]' - id: 8912 author: Susan author_email<EMAIL_ADDRESS>author_url: '' date: '2010-11-23 04:46:32 +0' date_gmt: '2010-11-23 11:46:32 +0' content: "this code is helping thanks\r\nSasan \r\nCertified cwna dumps\r\n expert." - id: 10272 author: Blogging to the Bank Full Review author_email<EMAIL_ADDRESS>author_url: http://bloggingtothebank-reviews.com/full-review-of-blogging-to-the-bank/ date: '2011-02-10 00:31:55 +0' date_gmt: '2011-02-10 07:31:55 +0' content: Searching for this for some time now - i guess luck is far more advanced than look for engines :) - id: 18703 author: Paul Nelson author_email<EMAIL_ADDRESS>author_url: http://SalientBlue.com date: '2011-10-20 05:24:01 +0' date_gmt: '2011-10-20 12:24:01 +0' content: "Nice post! I find that focusing on behavior (as you mention), while not a guarantee, is an excellent way to avoid tautological tests.\r\n\r\nOne technique I've used when getting tests around legacy code is to build the test line by line without the help of any mocking framework or test framework code. It helps me discover how the code is behaving. Simply starting a test by instantiating an object with all null parameters can lead to some interesting discoveries.\r\n\r\nWhen I work with teams on the above approach, they often find they don't really need the mocking framework while gaining a deeper understanding of behavior." - id: 19443 author: Dominick Kanno author_email<EMAIL_ADDRESS>author_url: http://www.xicom.dk/index.php?action=profile;u=635178 date: '2011-11-08 10:33:29 +0' date_gmt: '2011-11-08 17:33:29 +0' content: Some truly select articles on this web site , bookmarked . - id: 45191 author: Dwaqxijwbr author_email<EMAIL_ADDRESS>author_url: http://www.monclerjp2012.info/ date: '2012-12-12 21:54:19 +0' date_gmt: '2012-12-13 04:54:19 +0' content: WqzRxz [url=http://www.topgucci.info/]グッチ アウトレット[/url] UnuQqr HdyAbx [url=http://www.topgucci.info/]GUCCI アウトレット[/url] DzwIdm YfuDkq [url=http://www.topgucci.info/]グッチ 財布[/url] LlgVtc NszVfu http://www.topgucci.info/ HbaAkm - id: 50929 author: Hpxwot author_email<EMAIL_ADDRESS>author_url: http://www.adidasannka.com/ date: '2013-02-23 15:40:43 +0' date_gmt: '2013-02-23 22:40:43 +0' content: Uzdsgo [url=http://www.paulsmithfashion.com/]ポールスミス アウトレット[/url] Jepmxw Tbioua [url=http://www.paulsmithfashion.com/]ポールスミス 財布[/url] Cakelt Ffucis [url=http://www.paulsmithfashion.com/]Paul Smith アウトレット[/url] Eggdds Ajjzyx http://www.paulsmithfashion.com/ Pulwga Vfyewd [url=http://www.paulsmithtojp.com/]ポールスミス バッグ[/url] Xvwhwr Mntdug [url=http://www.paulsmithtojp.com/]ポールスミス 財布[/url] Qoscqe Qjmuxz [url=http://www.paulsmithtojp.com/]ポールスミス アウトレット[/url] Dusqtt Xubtwx http://www.paulsmithtojp.com/ Ajifmy Ctsgbh [url=http://www.guccilive2013.com/]グッチ 財布[/url] Xzfuyt Wjrhel [url=http://www.guccilive2013.com/]グッチ バッグ[/url] Uesmda Qoqgzf [url=http://www.guccilive2013.com/]グッチ アウトレット[/url] Lfphhf Emirnt http://www.guccilive2013.com/ Sjclrq Xdxlah [url=http://www.paulsmithforjp.com/]ポールスミス 財布[/url] Tkykfj Lioeno [url=http://www.paulsmithforjp.com/]ポールスミス アウトレット[/url] Vlxzpa Rlsmny [url=http://www.paulsmithforjp.com/]ポールスミス バッグ[/url] Vtggub Fhdyuf http://www.paulsmithforjp.com/ Nsxuvw Alnmqa [url=http://www.watchburando.com/]ポールスミス 時計[/url] Wwgtyw Abvink [url=http://www.watchburando.com/]ポールスミス [/url] Sadluy Rjllqe [url=http://www.watchburando.com/]バリー 腕時計[/url] Cezxjg Iuqlac http://www.watchburando.com/ Ulshft Untvip [url=http://www.gucciwatchjp.com/]グッチ 時計[/url] Vzhyeo Znfpfe [url=http://www.gucciwatchjp.com/]グッチ 腕時計[/url] Yjlgxf Dprzrp [url=http://www.gucciwatchjp.com/]gucci 時計[/url] Qhznqo Wlrxrq http://www.gucciwatchjp.com/ Bggezn - id: 55206 author: Jakyaftef author_email<EMAIL_ADDRESS>author_url: http://www.thebestshopping.tk date: '2013-04-09 21:20:14 +1000' date_gmt: '2013-04-10 04:20:14 +1000' content: "I fancy [url=http://neurosensorycenters.com/web/handbags.html]グッチ バッグ[/url]\r\n that more than joint junk companies abolished help of the pressure of themselves bottleneck. 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It much more private.... - id: 107561 author: szybkie kredyty przez internet author_email<EMAIL_ADDRESS>author_url: http://fcore.ws/szybkapozyczkadlazadluzonych775252 date: '2014-03-28 22:15:06 +0' date_gmt: '2014-03-29 05:15:06 +0' content: "Hi I am so glad I found your blog page, I really found you by accident, while I was \r\nresearching on Askjeeve for something else, Anyhow I am here now and \r\nwould just like to say thanks a lot for a marvelous post and a all round exciting blog \r\n(I also love the theme/design), I don’t have time to read it all \r\nat the minute but I have saved it and also included your RSS feeds, so when I have time I will be back to read much more, Please do keep up the great jo." - id: 109038 author: Guilherme author_email<EMAIL_ADDRESS>author_url: '' date: '2014-04-25 04:28:58 +1000' date_gmt: '2014-04-25 11:28:58 +1000' content: "Hi Fabio,\r\n\r\nThank you for writing about this topic. there's a formal definition for tautological tests? i've see this term used at another text but i can't find any source in books/papers.\r\n\r\nThank you" - id: 109329 author: Fabio Pereira » Mockists are dead. Long live Classicists author_email: '' author_url: http://fabiopereira.me/blog/2014/05/09/mockists-are-dead-long-live-classicists/ date: '2014-05-09 12:00:39 +1000' date_gmt: '2014-05-09 19:00:39 +1000' content: '[...] or other integration points. The main issues come up when we isolate our code from our own code. Tautological TDD is an anti-pattern that explains some of the reasons why mocking and stubbing too much is [...]' - id: 109360 author: Fabian author_email<EMAIL_ADDRESS>author_url: '' date: '2014-05-14 03:58:54 +1000' date_gmt: '2014-05-14 10:58:54 +1000' content: "Why then is a tautological test automatically a bad thing? Or what is the alternative - not to test it?\r\n\r\nDefining a test scenario ALWAYS includes redundancy with your implementation: you tell your subject under test how it is supposed to behave, and it behaves like that. In other words, if your code does anything apart from that, that functionality is not tested. So you apply TDD, you should actually never get to a point where you don't have this redundancy. But if we need to write a system with infinite states, such as algorithms, of course we can not test them all. There we must come up with a more sophisticated selection of test cases, one that is sort of inductive. And it is especially in this case that it is helpful to approach the problem with a TDD method, since this reduces the odds of us writing code that induces certain behaviour which we did not forsee.\r\n\r\nApart from that, I don't see how a TEST can be \"too whitebox\" or \"too blackbox\". That depends mainly on your design, not on how and what you test. \r\n\r\nAgain, the alternative is to just not test, which gives me a worse feeling, because that opens the door to allow me to alter code without any test failing. And it also serves as an excuse to simply write less tests in general (broken window principle).\r\n\r\nIMHO the main problem is that test code is often not as flexible as production code. Coders often neglect test code quality (esp. readability, rednundancy) because it is not production code, plus the frameworks are often inferior and people don't use them proficiently." - id: 109438 author: Bertalan author_email<EMAIL_ADDRESS>author_url: '' date: '2014-05-21 07:45:30 +1000' date_gmt: '2014-05-21 14:45:30 +1000' content: "Great article, though nowadays I tend to be more radical about what I consider tautological\r\n@Fabian Unit testing is just one level of testing - if your unit tests are tautological they probably need to be replaced with some test with value, tests on other levels, system, integration, functional, acceptance tests.\r\nThe only tests which actually have value are the acceptance tests - all lower level tests are only to help finding the erroneous code and not the presence of bugs (as a failing unit test is not necessarily means a functional issue, and the lack of failing unit tests doesn't mean lack of functional defects).\r\nChanging code usually involves changing the tests (which can be done in a wrong way as well) - so actually it is better to have tests on a level, where the tests don't need to be changed when refactoring happens.\r\nIf frameworks and programmers fail to use the tools correctly, then probably you should choose a tool which is easier to use (because that would make you more productive and safe)." - id: 111473 author: Mockar ou não mockar, eis a questão | iMasters author_email: '' author_url: http://imasters.com.br/desenvolvimento/mockar-ou-nao-mockar-eis-questao/ date: '2014-07-14 06:00:44 +1000' date_gmt: '2014-07-14 13:00:44 +1000' content: '[...] Tautological TDD é um antipadrão que explica algumas situações em que o uso excessivo de mocks e stubs é perigoso. Durante o hangout, foi dito: “se faço TDD, eu posso refatorar meu código“. Testes “tautológicos“, que são muito caixa branca, checam mais interações do que comportamento, geralmente precisam ser modificados quando refatoramos nosso código. Se você precisa mudar o seu teste para cada refatoração que fizer no seu código, como saber se a mudança do código não quebrou nada? Já vi muita gente mudar o código e mudar o teste só pra fazer o teste passar. [...]' - id: 111474 author: Mockar ou não mockar, eis a questão | iMasters author_email: '' author_url: http://imasters.com.br/desenvolvimento/mockar-ou-nao-mockar-eis-questao/ date: '2014-07-14 06:00:44 +1000' date_gmt: '2014-07-14 13:00:44 +1000' content: '[...] Tautological TDD é um antipadrão que explica algumas situações em que o uso excessivo de mocks e stubs é perigoso. Durante o hangout, foi dito: “se faço TDD, eu posso refatorar meu código“. Testes “tautológicos“, que são muito caixa branca, checam mais interações do que comportamento, geralmente precisam ser modificados quando refatoramos nosso código. Se você precisa mudar o seu teste para cada refatoração que fizer no seu código, como saber se a mudança do código não quebrou nada? Já vi muita gente mudar o código e mudar o teste só pra fazer o teste passar. 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One of the advantages of being a consultant is getting to see different environments and being able to visualise and identify patterns and anti-patterns.
"An anti-pattern is a pattern that may be commonly used but is ineffective and/or counterproductive in practice" http://en.wikipedia.org/wiki/Anti-pattern
As a first step, let’s describe TTDD – Tautological Test Driven Development as an anti-pattern of TDD (TestDrivenDevelopment). In fact TTDD is a big enemy of the combination BDD (BehaviourDrivenDesign) and TDD.
I still have the vivid memory of the day that I was pairing with Dave Coombes and he mentioned that one of the tests I had written was tautological.
Tautological: - needless, redundant repetition of an idea - repetition of same sense in different words; - the phrase "a beginner who has just started" is tautological
I did not quite understand at first why the test was tautological, i.e. needless, redundant. As a perfect leader and coach that Dave is, he helped me rewrite the test in a different way and that was when I finally understood what he had meant by that.
Example
The example below is simplified version of the one that Dave and I were using at the time. In this example, we want to test the class CarRepository that interacts with 2 collaborators as shown below:
In order for CarRepository to retrieve all the cars from CarService it needs a ServiceHeader that is provided by ServiceHeaderFactory. For the purposes of this example, I’ll show the implementation of CarRepository:
public class CarRepository {
private ServiceHeaderFactory serviceHeaderFactory;
private CarService carService;public CarRepository(ServiceHeaderFactory serviceHeaderFactory,
CarService carService) {
this.serviceHeaderFactory = serviceHeaderFactory;
this.carService = carService;
}
public Cars findAll() {
ServiceHeader serviceHeader = serviceHeaderFactory.create();
return carService.findAll(serviceHeader);
}
}
Tautological Test
The test below is similar to the one I wrote that we described as tautological:
@Test
public void shouldRetrieveCarsFromCarServiceUsingTheRightServiceHeader() throws Exception {
// GIVEN
ServiceHeader serviceHeader = new ServiceHeader();
ServiceHeaderFactory serviceHeaderFactoryMock = mock(ServiceHeaderFactory.class);
when(serviceHeaderFactoryMock.create()).thenReturn(serviceHeader);
CarService carServiceMock = mock(CarService.class);
CarRepository carRepository = new CarRepository(serviceHeaderFactoryMock, carServiceMock);// WHEN
carRepository.findAll();// THEN
verify(carServiceMock).findAll(serviceHeader);
}
Why is this test called Tautological?
One of the definitions of a tautology is: “repetition of same sense in different words”
If you look carefully at these 2 lines of implementation and 2 lines of test:
Test
Implementation
They are almost “equivalent”. When we write tests this way, most of the time if the implementation changes, we end up changing the expectations of the test as well and yeah, the tests pass automagically. But without knowing much about its behaviour. These tests are a mirror of the implementation, therefore tautological.
The test below verifies the same class CarRepository, but as a black box test, i.e. it does not test the interactions, but the output of the repository. Look at the assertion.
@Test
public void shouldBeAbleToRetrieveCars() throws Exception {
// GIVEN
Cars carsFromService = new Cars(new Car("Ferrari"), new Car("Porsche"));
CarRepository carRepository = givenARepositoryAttachedToACarServiceWithCars(carsFromService);// WHEN
Cars carsFromRepository = carRepository.findAll();// THEN
Assert.assertEquals(carsFromService, carsFromRepository);
}private CarRepository givenARepositoryAttachedToACarServiceWithCars(Cars carsFromService) {
ServiceHeader serviceHeader = new ServiceHeader();
ServiceHeaderFactory serviceHeaderFactoryMock = mock(ServiceHeaderFactory.class);
when(serviceHeaderFactoryMock.create()).thenReturn(serviceHeader);
CarService carServiceMock = mock(CarService.class);
when(carServiceMock.findAll(serviceHeader)).thenReturn(carsFromService);
CarRepository carRepository = new CarRepository(serviceHeaderFactoryMock, carServiceMock);
return carRepository;
}
There is still a big effort to setup the mocks and inject them into the repository. This has been extracted to the method givenARepositoryAttachedToACarServiceWithCars. However, all these mock setups make it harder to understand the intent of the test, the responsibility of the class that we are trying to test. When this happens I usually tend to use stubs instead of mocks. Here is the same version of the tests, but using Stubs:
@Test
public void shouldBeAbleToRetrieveCars() throws Exception {
// GIVEN
Cars carsFromService = new Cars(new Car("Ferrari"), new Car("Porsche"));
CarRepository carRepository = givenARepositoryAttachedToACarServiceWithCars(carsFromService);// WHEN
Cars carsFromRepository = carRepository.findAll();// THEN
Assert.assertEquals(carsFromService, carsFromRepository);
}private CarRepository givenARepositoryAttachedToACarServiceWithCars(Cars carsFromService) {
ServiceHeaderFactory serviceHeaderFactory = new ServiceHeaderFactoryStub();
CarService carService = new CarServiceStub(carsFromService);
CarRepository carRepository = new CarRepository(serviceHeaderFactory, carService);
return carRepository;
}
It is not a rule, but I find that tautological tests have more mock setup. When we start to think about the collaborators as stubs, the tests become more behavioural.
What are the common characteristics of a Tautological Test?


NUM demands probe into Eskom over failure to make profit | IOL News
Johannesburg - The National Union of Mineworkers (NUM) has called for an independent audit on power utility Eskom to probe why it repeatedly fails to post profits.
The union's president Joseph Montisetse says the relationship between Eskom and big mining companies should be probed, claiming that the sale of energy to big mining companies is conducted illicitly.
“The problem with Eskom is corruption, which is prevalent there. We think that there must be an audit by independent auditors that can discover why Eskom cannot make a profit because we believe that the selling of energy to the bigger companies, especially in the mining industry, is not done in a fair way."
“Some companies are getting energy at low, low, rate and with the buying of coal from companies there seems to be no standard that is used by Eskom to buy coal,” said Montisetse.
He said that when it came to procurement at Eskom, there are many companies taking a huge chunk of money from the power utility through fraudulent procurement.


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SkeletonCSS is an expansion upon the original SkeletonCSS framework designed by Dave Gamache. It includes components from the Skeleton on SASS project by Seth Coelen. I have made my own changes as well, integrating many of the changes I typically make when starting a new project with Skeleton. Many of these changes are subjective and match my personal preferences, which may differ from the preferences of others. Overall my goal is to do small fixes and changes to Skeleton to update it for 2016 and onward, along with altering some of the typographic elements I have always changed in my own projects.
Here is an overview:
The maximum container width has been increased from 960px in SkeletonCSS 2.0 to 1200px. This allows pages to span wider screens before maxing out in size.
A 1.5rem margin has been added to the top of the body to separate headers from the top of the page.
Thanks to the Skeleton on SASS project, SkeletonCSS is now broken down into SCSS components, included in this project.
Small changes have been made to the color of the typography of SkeletonCSS. The <p>
text is now slightly lighter in color than the headers, #444 versus #222.
Roboto has been added as a body font for Skeleton.
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Introduction to HTML
HTML is a markup language for describing web documents (web pages).
- HTML stands for Hyper Text Markup Language
- A markup language is a set of markup tags
- HTML documents are described by HTML tags
- Each HTML tag describes different document content
- Each HTML tag describes different document content
Five Things You Should Know About HTML5
- It’s not one big thing.
- You don’t need to throw anything away.
- It’s easy to get started.
- It already works.
- It’s here to stay.
You may well ask: “How can I start using HTML5 if older browsers don’t support it?” But the question itself is misleading.  So you can’t detect “HTML5 support,” because that doesn’t make any sense. But you can detect support for individual features, like canvas, video, or geolocation.
You don’t need to throw away your existing markup. You don’t need to relearn things you already know. If your web application worked yesterday in HTML 4, it will still work today in HTML5.
“Upgrading” to HTML5 can be as simple as changing your doctype. Previous versions of HTML defined a lot of doctypes, and choosing the right one could be tricky. In HTML5, there is only one doctype.
Upgrading to the HTML5 doctype won’t break your existing markup, because obsolete elements previously defined in HTML 4 will still render in HTML5.
But it will allow you to use — and validate — new semantic elements like

,

,
, and
.
Whether you want to draw on a canvas, play video, design better forms, or build web applications that work offline, you’ll find that HTML5 is already well-supported. Firefox, Safari, Chrome, Opera, and mobile browsers already support canvas, video, geolocation, local storage, and more.
Tim Berners-Lee invented the world wide web in the early 1990s. He later founded the W3C to act as a steward of web standards, which the organization has done for more than 15 years. Here is what the W3C had to say about the future of web standards, in July 2009:
Today the Director announces that when the XHTML 2 Working Group charter expires as scheduled at the end of 2009, the charter will not be renewed. By doing so, and by increasing resources in the HTML Working Group, W3C hopes to accelerate the progress of HTML5 and clarify W3C’s position regarding the future of HTML.
The most interesting new API's
- HTML Geolocation
- HTML Drag and Drop
- HTML Local Storage
- HTML Application Cache
- HTML Web Workers
- HTML SSE


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